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Studio Display not working with PC after 16.4 firmware update.

I've used my Studio Display with my PC work laptop, running Fedora 36, for about 12 months over USB-C. However, after installing the 16.4 software update over the weekend, the display no longer works with my work laptop (although it still works with my Mac).


My laptop recognises the Studio Display as a USB device (`lsusb` lists the Studio Display and its USB Hub as connected devices) but doesn't use it as a display. The Studio Display is blank while it's plugged into the laptop.


I've tried:

  • Unplugging the Studio Display from power for 30 seconds and plugging it back in.
  • Using multiple different USB-C cables, which each worked until I installed the new software update.


Has anyone else experienced this? Is there a way to rollback the software update?

Posted on Apr 10, 2023 7:18 PM

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Question marked as Top-ranking reply

Posted on May 8, 2023 8:27 PM

In my case, the USB-hub, speakers, webcam, and microphone still work. Only the display's stopped working. As I mentioned in my original post, the Studio Display continues to work as expected with my Mac.


I've attached the output of `dmesg` when I connect the Studio Display to my laptop via USB-C. My laptop detects two devices -- the USB2 Hub and the Studio Display -- but it does not recognise a display.


[99149.206027] usb 1-2: new high-speed USB device number 14 using xhci_hcd
[99149.335440] usb 1-2: New USB device found, idVendor=05ac, idProduct=101d, bcdDevice=52.12
[99149.335446] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[99149.335448] usb 1-2: Product: USB2 Hub
[99149.335450] usb 1-2: Manufacturer: Apple
[99149.335451] usb 1-2: SerialNumber: [...]
[99149.336673] hub 1-2:1.0: USB hub found
[99149.336996] hub 1-2:1.0: 4 ports detected
[99149.656027] usb 1-2.4: new high-speed USB device number 15 using xhci_hcd
[99149.761681] usb 1-2.4: New USB device found, idVendor=05ac, idProduct=1114, bcdDevice= 2.01
[99149.761688] usb 1-2.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[99149.761690] usb 1-2.4: Product: Studio Display
[99149.761692] usb 1-2.4: Manufacturer: Apple Inc.
[99149.761693] usb 1-2.4: SerialNumber: [...]
[99149.766410] usb 1-2.4: Found UVC 1.50 device Studio Display (05ac:1114)
[99149.937902] hid-generic 0003:05AC:1114.0020: hiddev96,hidraw2: USB HID v1.01 Device [Apple Inc. Studio Display] on usb-0000:00:14.0-2.4/input5
[99149.944836] hid-generic 0003:05AC:1114.0021: hiddev97,hidraw3: USB HID v1.01 Device [Apple Inc. Studio Display] on usb-0000:00:14.0-2.4/input6
[99149.946405] hid-generic 0003:05AC:1114.0022: hiddev98,hidraw4: USB HID v1.01 Device [Apple Inc. Studio Display] on usb-0000:00:14.0-2.4/input7
[99149.948394] hid-generic 0003:05AC:1114.0023: hiddev99,hidraw5: USB HID v1.01 Device [Apple Inc. Studio Display] on usb-0000:00:14.0-2.4/input8
[99149.951171] hid-generic 0003:05AC:1114.0024: hiddev100,hidraw6: USB HID v1.01 Device [Apple Inc. Studio Display] on usb-0000:00:14.0-2.4/input9


It's interesting to see that several other people have had a similar experience. I suspect this was an unintended consequence of the 16.4 update. I hope that Apple redresses this issue in the future. In the meantime, I'll be using my laptop's tiny built-in display for work...

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Studio Display not working with PC after 16.4 firmware update.

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